6699029b67
We tend to assume that the AA pipeline is by default the default AA pipeline and it's confusing when it's empty instead. PR48779 Initially reverted due to BasicAA running analyses in an unspecified order (multiple function calls as parameters), fixed by fetching analyses before the call to construct BasicAA. Reviewed By: asbirlea Differential Revision: https://reviews.llvm.org/D95117
91 lines
2.4 KiB
LLVM
91 lines
2.4 KiB
LLVM
; RUN: opt -passes="default<O2>" -disable-output %s
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; REQUIRES: asserts
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; PR42272
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@b = external global i32, align 4
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@f = external global i32, align 4
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@g = external global i32, align 4
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define i32* @a(i32 %h) #0 {
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entry:
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%h.addr = alloca i32, align 4
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store i32 %h, i32* %h.addr, align 4
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%tmp0 = load i32, i32* %h.addr, align 4
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switch i32 %tmp0, label %sw.default [
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i32 4, label %sw.bb
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i32 3, label %sw.bb1
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i32 2, label %sw.bb3
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]
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sw.bb: ; preds = %entry
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%call = call i32 (...) @c()
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unreachable
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sw.bb1: ; preds = %entry
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%call2 = call i32 (...) @c()
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unreachable
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sw.bb3: ; preds = %entry
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%call4 = call i32 (...) @c()
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%conv = sext i32 %call4 to i64
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%tmp1 = inttoptr i64 %conv to i32*
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ret i32* %tmp1
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sw.default: ; preds = %entry
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unreachable
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}
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define i32 @m() #1 {
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entry:
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%call = call i32 @j()
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%call1 = call i32 @j()
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ret i32 undef
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}
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define internal i32 @j() #0 {
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entry:
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%i = alloca i32, align 4
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store i32 0, i32* %i, align 4
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br label %for.cond
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for.cond: ; preds = %for.body, %entry
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%tmp0 = load i32, i32* %i, align 4
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%tmp1 = load i32, i32* @f, align 4
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%cmp = icmp ult i32 %tmp0, %tmp1
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br i1 %cmp, label %for.body, label %for.cond.cleanup
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for.cond.cleanup: ; preds = %for.cond
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%tmp2 = load i32, i32* @f, align 4
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%call3 = call i32* @a(i32 %tmp2)
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ret i32 undef
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for.body: ; preds = %for.cond
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%call = call i32 (...) @c()
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%call1 = call i32 (...) @c()
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%call2 = call i32 (...) @c()
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%tmp3 = load i32, i32* @b, align 4
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%tmp4 = load i32, i32* @g, align 4
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%sub = sub nsw i32 %tmp4, %tmp3
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store i32 %sub, i32* @g, align 4
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%tmp5 = load i32, i32* %i, align 4
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%inc = add i32 %tmp5, 1
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store i32 %inc, i32* %i, align 4
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br label %for.cond
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}
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declare i32 @c(...) #0
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #2
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) #2
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attributes #0 = { "use-soft-float"="false" }
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attributes #1 = { "target-cpu"="x86-64" }
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attributes #2 = { argmemonly nounwind }
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